一零七 Three people at work. The salary are X, 2X per hour, and 3x, respectively, for the level1 and level2 and level3. Q is how many more minutes the level1 has to work in order to get 1 dollar level3 work if both level1 and level3 work in one hour(not sure how the sentence made)? 1) Level 1 is 10.5$ per hour 2) Level2 to level3 is ?? 求讨论呀